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Finding the Fourth Proportional to 363,881.20, 545,821.80 and 203,792.80

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Solution

The fourth proportional to 363,881.20, 545,821.80 and 203,792.80 is: 305,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,881.20 : 545,821.80 = 203,792.80 : x
  2. Step 2: Convert to fraction form
    363,881.20/545,821.80 = 203,792.80/x
  3. Step 3: Cross multiply
    363,881.20x = 545,821.80 × 203,792.80
  4. Step 4: Simplify right side
    363,881.20x = 111,234,552,923.04
  5. Step 5: Solve for x
    x = 111,234,552,923.04/363,881.20
  6. Step 6: Final answer
    x = 305,689.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.